George will cox



G. WILLCOX.

Grain Winnower.

Patented June 16,1868

Wain em s 06 N. PETERSv PhoioLitho items fates garter Quin Letters Patent No. 78,907, dated June 16,1868.

IMPROVEMENT IN GEAIN GHAFFING MILLS.

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Be it known that I, Gnousu WILLCOX, otNecnah, in the county of winnebago aud State of Wisconsin, have invented a new and useful Improvement in Grain-Chafing Mills; and I do hereby declare that the following is a full, clear, andexact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in wh'ich-- Figure 1 is a perspective'view.

Figure 2 is -a front end view.

Figure 3 front end brace.

Figure 4, side elevation. I

Figure"5, sectional view of a and b. a

a is the shoe or casement, composedof either woodor iron, constructed in concave form, being made more narrow at the rear end, thereby compressing the blast of wind from the fans and upon the sides of sieve, thereby preventing the outward escape of the chaff through the sides of sieve into the shoe along with the grain, with sag at the front end, as seen at m, in fig. 1, used for conveying grain to the spout.

b is two or more holes in the rear end and upper side of shoe a, for the purpose of attaching the shoe to levers c c, as seen at b in fig. 4. I I

c c are two levers attached to shoe (1, with holes at each end for bolts, as seen atf and x in fig. 4, whereby it may be raised and loweredat will when attached to mill.

d d are guides to the rims of sieve, for the purpose of keeping the sieve at a. balance directly over rollers 3 and 2, and preventing said sieve from working out of place. 'Said guides are composed of wood or iron, and attached to shoe a, as seen at d d in fig. 1.

g is the rear rim and larger end of sieve, to which the wire is attached by means of solder or brazing,

thereby strengthening and supporting the sieve.

K is the front rim, and smaller end of sieve, it being about one-third smaller in diameter than the rear end rim g, thereby forming a conical sieve, and beingthe smaller end forward, receives the direct outward blast of wind fromthe fans upon the outside of the sieve, thereby clearing the inside of the wire of ohail', and facilitates its escape outward at the rear end of sieve, as seen in fig. 5', at g and K.

R is the'front end or forked brace, attached at each end to shoe a, as seen in fig. 1 at R, and supporting the front end of shaft 8, with rollers 2 and 3, and pulley 1, as seen at B. in fig. 5, and 3, 2, 8 and 1. Roller No. 2 is inade'largcr than roller No. 3, because the rim g of sieve is about one-third larger in diameter than rim K, therefore roller Mo. 2 is made correspondingly larger than roller No. '3, seats to travel the distance around the rim g while'roller No. 3 travels rim K. Pulley No. 1 is attached to rear end of shaft '8, for the purpose of receiving a belt to propel shaft 8, with rollers 2 and 3, thereby revolving the sieve. I

What I claim as my invention, is- V 1. The shoe a, which encases the sieve, and, compresses the blast upon the rear part of sieve.

2. The attaching of the shoe a to levers-c e, and holesf and y, whereby the whole may be raised or lowered at will when attached to the threshing-machine.

. The guides to front and rear end of sieve.

4. The arranging of the conical sieve within the shoe a, as set forth.

5. The brace R as attached to shoe a. v

6. The arranging of shaft 8 with rollers 2 and 3, and pulley 1, for propelling the sieve.

7. The machine herein described, when its several parts are arranged and combined as set forth.

GEORGE WILLCOX.

Witnesses:

' L. DUNN, I

I) C. VArI Osrnnnn. 

